Answer: 11/32
Step-by-step explanation:
When 6 coins are tossed at a time; total number of possible outcomes = (2*2*2*2*2*2) = 2^6 = 64. Therefore, there are (15 + 6 + 1) = 22 possible outcomes leading us to get 4 or more heads. Therefore, probability of getting 4 or more heads = (22 / 64) = (11 / 32).
